Solve bug, where respectPrefersColorScheme is not working

Signed-off-by: Nick Slowinski <nick@nick-slowinski.de>

docusaurus.config.ts

@@ -170,8 +170,6 @@ const config: Config = {
       darkTheme: prismThemes.dracula,
     },
     colorMode: {
-      defaultMode: 'dark',
-      disableSwitch: false,
       respectPrefersColorScheme: true,
     },
   } satisfies Preset.ThemeConfig,